<p>Ok, so when i enter tan-1(2/10.389) on my calculator i get a number around 1.38. When i do this same problem on my phone, i get the answer im looking for, around 79.11...
tell me CC what am i doing wrong?</p>
<p>Put it in degree mode.</p>
<p>Common mistake, sometimes I got mixed up too since we used radians pretty much all the time in PreCalc and degree mode in Physics.</p>